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L5 Fault Restart
L5-01 Number of Auto Restart Attempts
Setting Range:
0 to 10
Factory Default: 0
L5-02 Auto Restart Operation Selection
Setting
0
No Flt Relay (factory default)
1
Flt Relay Active
L5-03 Maximum Restart Time After Fault
Setting Range:
0.5 to 600.0 Seconds
Factory Default: 180.0 Seconds
All major faults will cause the Drive to stop. For some faults it is possible to configure the Drive to attempt a restart
automatically. After the fault occurs, the Drive baseblocks for L2-03 seconds. After the baseblock is removed the Drive checks
if a fault condition still exists. If no fault condition exists the Drive will attempt to restart the motor. If the restart is successful,
the Drive performs a Speed Search (Regardless of the status of b3-01 "Speed Search Selection") from the set speed command
and the Auto Restart Attempts count is increased by one. Even if the restart fails the restart count is increased by one as long
as the Drive attempted to rotate the motor. The restart count will not be incremented if the restart is not attempted due to a
continuing fault condition, (i.e. an OV fault). The Drive waits L5-03 seconds before attempting another restart.
The auto restart count is reset back to 0 if any of the following occur:
•
No further faults for ten minutes after the last retry.
•
The Drives power is turned off (the Drive must be without power long enough to let control power dissipate).
•
The SHIFT/RESET key is pushed after the last reset attempt.
Description
Run
OV
Fault
trying each
L5-03 seconds successful
L2-03
Attempts
Count
Voltage
remains high
for a long time,
then reset (1)
Fig. 80 Automatic Restart Timing Diagram
OC
OC
try but failed
L2-03
L2-03
2
1
Drive trips on OC,
resets (2) and tries
again but motor still
shorted, trips again.
Programming 109
t
t
successful
t
3
TIME
t
OC condition
gone, resets (3)
and runs.
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